Carrier 33ZCSECTRM Specifikace stáhnout pdf (Strana 4)

SPECIFIED SENSING TEMPERATURE RANGE — The

zone controller space temperature, supply air temperature, and

primary air temperature sensing range is –40 to 245 F (–40 to

118 C). The zone controller has an allowable control set point

range from 40 to 90 F (4 to 32 C) for heating and 45 to 99 F

(7 to 37 C) for cooling.

COMMUNICATIONS — The number of controllers is limit-

ed to 128 zones maximum, with a limit of 8 systems (Linkage

Coordinator configured for at least 2 zones). Bus length may

not exceed 4000 ft (1219 m), with no more than 60 devices on

any 1000 ft (305 m) section. Optically isolated RS-485 repeat-

ers are required every 1000 ft (305 m).

At 19,200 and 38,400 baud, the number of controllers is

limited to 128 maximum, with no limit on the number of Link-

age Coordinators.

ENVIRONMENTAL RATINGS

Operating Temperature: 32 to 140 F (0° to 60 C) at 10 to

90% RH (non–condensing)

Shipping Temperature: –40 to 185 F (-40 to 85 C) at 0 to

90% RH (non–condensing)

VIBRATION

Performance vibration:

• 0.014-in. (0.356 mm) Peak-to-Peak displacement

measured at 5 to 31 Hz

• 0.75 G measured at 31 to 300 Hz

CORROSION

Office environment. Indoor use only.

VAV Fan Terminal Zone Controller

(33ZCFANTRM) —

The VAV Fan Terminal Zone Con-

troller provides dedicated control functions for series fan or

parallel fan powered terminals, single duct terminals with 3

stages of heat, or as a primary controller for dual duct or zone

pressurization applications. The zone controller is part of the

Carrier ComfortID System.

The 33ZCFANTRM VAV Fan Terminal Zone Controller

provides the following features and benefits:

• provides Pressure Independent (VAV) control

• uses Proportional Integral Derivative (PID) control

• mounts directly onto VAV box damper shaft

• terminal fan control

• for terminals up to 9000 cfm or

3.4 sq. ft inlet (primary air)

• auxiliary heating control of modulating (floating) hot

water, two-position hot water; single, two, or three stage

electric; or zone perimeter heat

• quick and easy commissioning and balancing process

• automatic self calibration of airflow transducer

• capable of stand-alone operation

• actuator preassembled to housing

• capable of demand controlled ventilation

• capable of individual zone pressure control for individ-

ual supply and exhaust control in conjunction with sec-

ondary terminal controller (required)

• easy access to airflow sensor pneumatic connections

• Carrier Comfort Network (CCN) protocol compatible

• capable of high-speed 38.4 kilobaud communications

network operation

• 128 controller maximum system (must be located on

same CCN bus segment)

• capable of zone humidity control (dehumidification)

• Carrier Linkage System compatibility

• global set point and occupancy scheduling

• capable of local set point adjustment with field-installed

temperature sensor (with temperature offset)

• both controller housing and actuator are UL94-5V ple-

num rated

The zone controller is a single duct or fan powered, variable

air volume (VAV) terminal control with a factory-integrated ac-

tuator. The zone controller maintains precise temperature con-

trol in the space by operating the terminal fan and regulating

the flow of conditioned air into the space.

Buildings with diverse loading conditions can be supported

by controlling reheat, ducted heat, or non-ducted supplemental

heat. The zone controller can support two-position hot water,

modulating hot water, or up to 3-stage electric heat.

With the addition of a secondary exhaust or return air termi-

nal and the 33ZCSECTRM controller, zone pressurization ap-

plications can be supported.

Supply and exhaust airflow control is provided on an

individual zone basis in order to maintain the desired zone

pressure.

The 33ZCSECTRM in conjunction with the fan terminal

zone controller are used to provide control for constant volume

dual duct applications.

When linked to a Carrier Linkage System, the zone control-

ler provides numerous features and benefits such as weighted

average demand for system operation, intelligent supply air

temperature reset, set point averaging, global set point sched-

ule, and occupancy scheduling. Duct static pressure reset for

the air source is provided, based on terminal requirements.

The zone controller provides additional control features

such as Occupied/Unoccupied scheduling initialized via the

network. The zone controller offers override invoked from a

wall sensor during unoccupied hours from 1 to 1440 minutes in

1-minute increments. Optional indoor air quality (IAQ) or rela-

tive humidity monitoring and control are also available.

The zone controller assembly contains an integral VAV ac-

tuator that is field mounted to the VAV terminal damper shaft,

similar to the mounting of a standard actuator. The actuator is

rated at 35 lb-in. (3.95 Nm) torque, a 90 degree stroke, and pro-

vides a 90-second nominal running time at 60 Hz. The actuator

is suitable for mounting onto a

-in. (9.5 mm) square or round

damper shaft, or onto a

-in. (13 mm) round damper shaft.

The minimum damper shaft length is 1

-in. (45 mm). The

zone controller is designed for vertical or horizontal mounting.

The zone controller is provided with removable connectors

for power and communications. The zone controller has non-

removable screw type connectors for inputs. The removable

connectors are designed so that they can be inserted one way so

as to prevent installation errors. The zone controller also pro-

vides an RJ-11 modular phone jack for the Network Service

tool connection to the module via the Carrier Comfort Network

(CCN) communications.

An optional conduit box cover (Part Number

33ZCCONBOX) allows field wiring connection via conduit.

The conduit box is designed to accept two

-in. (13 mm)

EMT conduits.

The 33ZCFANTRM is designed to allow a service person

or building owner to configure and operate the unit through the

CCN user interfaces. A user interface is not required for day-

to-day operation. All maintenance, configuration, setup, and

diagnostic information is available through the Level II com-

munications port to allow data access by an attached computer

running Network Service Tool, ComfortVIEW

, or Comfort-

WORKS

software.

WIRING CONNECTIONS — Field wiring is 18 to 22 AWG

(American Wire Gage). The zone controller is a NEC (National

Electrical Code) Class 2 rated device.

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